I've had several discussions with friends lately about investing, mostly in the wake of robinhood.io's early release. Quite a few people have the plan to put some cash into robinhood.io accounts and engage in some sort of investment strategy. Strategy ideas range from daytrading (I do ...

On a number of occasions, I've spoken to prospective clients and observed others making the following mistake. They've set up an A/B test or bandit system using relatively standard statistical methodology. Unfortunately, their sample size is prohibitively low. In order to "fix" this, they tweak the methodology ...